Hi Domingos,
On 08/08/11 23:15, dhl...@sapo.pt wrote:
Hi Greg.
Thanks for the reply...
On 05/08/11 19:53, dh...@sapo.pt wrote:
I am using the uClinux-dist-20110603, and trying compile to MOD5272
(Netburner) kernel 2.4.x with m68k-uclinux-tools.
I have some problems with fec driver.
Configuration 1:
If i choose only this Kernell configuration:
[ * ]FEC ethernet controller (of coldfire 5272/5282/5280)
[ ] enable second FEC port (5274/5275)
[ ] enable IOCTL (EXPERIMENTAL)
[ ] Micrel KS8995M switch chip suport
In uClinux boot:
PHY is correctly recognized correctly:
......
fec.c: Probe number 1 with 0x0000
eth0: FEC ENET Version 0.2, 00:03:f4:04:49:4a
fec: PHY @ 0x1, ID 0x00221619 -- KS8721BL
......
But the ethernet don?t work correctly, ping for own IP works, ping for
other IP cause:
......
# ping -c 5 172.18.201.123
PING 172.18.201.123 (172.18.201.123): 56 data bytes
NETDEV WATCHDOG: eth0: transmit timed out
eth0: transmit timed out.
Ring data dump: cur_tx 2263100, dirty_tx 2263100 cur_rx: 2263008
........
--- 172.18.201.123 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
#
......
ping form other IP to MOD5272 too not work.
That could be because no link is detected. If you have a tool like
mii-tool or ethtool you can run on the board you could run that
to see.
Configuration 2:
If i choose only this Kernell configuration:
[ * ]FEC ethernet controller (of coldfire 5272/5282/5280)
[ ] enable second FEC port (5274/5275)
[ ] enable IOCTL (EXPERIMENTAL)
[ * ] Micrel KS8995M switch chip suport
In uClinux boot:
PHY is NOT FOUND:
......
fec.c: Probe number 1 with 0x0000
eth0: FEC ENET Version 0.2, 00:03:f4:04:49:4a
FEC: No PHY device found.
......
But the ethernet work correctly, ping:
It could be that for the support of switch ports that link is ignored,
and always assumed to be "up".
Digging in source files i found, the difference between configuration
1 and 2 is in file: uClinux-dist/linux-2.4.x/drivers/net/fec.c
configuration 1: 171: #define PHY_START_ADDR 0
configuration 2: 164: #define PHY_START_ADDR 5
Digging in mailing list uClinux-dev, i found many fec.c PATCHs...
Some for 2.4.x fec.c file, some for 2.6.x fec.c file, and others for
unknown fec.c file....
And, i got the doubt, if all these changes were present in the source
I am using??
If you follow the email trail for this patch though you will see
it is solved by a different code change. So you won't see that
exact code change in that patch. And this is probably true of a
few changes over the years if you follow the trail.
Ok, this was what I thought. I only ask to confirm.
Back a little behind on my problem:
I had a image (made by another person) of uclinux (kernel 2.4.20-uc0).
This image works well in Netburner MOD5272 v1.3 (with PHY DAVICOM DM9161EP).
But in MOD5272 v1.2 (with PHY MICREL KSZ8721BL), it has a problem on
soft reboot (shell reboot command).
The problem is:
After rebbot command the board starup, but the ethernet never start
again, only with a hard reboot (remove the power).
I think this problem is related com o FEC driver, because the only
difference between normal startup and startup after reboot is:
In the normal startup:
.....
fec.c: Probe number 0 with 0x0000
eth0: FEC ENET Version 0.2, 00:03:f4:04:49:4a
fec: PHY @ 0x1, ID 0x00221619 -- unknown PHY!
.....
Startup after reboot command:
.....
fec.c: Probe number 0 with 0x0000
eth0: FEC ENET Version 0.2, 00:03:f4:04:49:4a
fec: PHY @ 0xf, ID 0x00221619 -- unknown PHY!
.....
Very strange. Wouldn't expect the PHY address to move from 0x1 to 0xf.
So, then to solve this problem I decided to compile the latest distro
of uClinux and see what happens.
And now I have problems with the same FEC driver.
What sort of PHY does your board actually have on it?
The PHY of my board is MICREL KSZ8721BL.
But if possible would like also supports to DAVICOM DM9161EP.
And what PHY address is it mapped to?
I do not know.
where can I see the definition of PHY address?
It is a property of the board design. Who ever laid out the board
would usually set that up with pull-ups/pull-downs on the PHY.
Regards
Greg
------------------------------------------------------------------------
Greg Ungerer -- Principal Engineer EMAIL: g...@snapgear.com
SnapGear Group, McAfee PHONE: +61 7 3435 2888
8 Gardner Close FAX: +61 7 3217 5323
Milton, QLD, 4064, Australia WEB: http://www.SnapGear.com
_______________________________________________
uClinux-dev mailing list
uClinux-dev@uclinux.org
http://mailman.uclinux.org/mailman/listinfo/uclinux-dev
This message was resent by uclinux-dev@uclinux.org
To unsubscribe see:
http://mailman.uclinux.org/mailman/options/uclinux-dev
